Hanging on to food

my girl hangs on to food. breakfast, lunch, dinner, snacks. She eats almost everything but will leave a bit on her plate and take food for the road. She holds it in her hand and lick it 😂😂

She'll hold it for like 15 mins and then feed it to the dog or will try to feed it to us. She doesn't care for snacks, she usually feeds that to the dog too. Anyone else LO doing this? She's on track with weight so I'm not worried just find it funny.